Harrow.



H. D. & F. A. BOKOP.

HAEROW.

APPLICATION FILED NOV. 20, 1913- 1,128,285. Patented Feb. 16, 1915.

Attorneys 4%Z% by UNITED STATES PATENT oFnio HENRY 1). BOKO]? AND FREDERICK AQ'BOKO'P, or DEFIANCE, OHIO.

I-IARROW.

Specification of Letters Patent.

Application filed November 20, 1913. Serial N 0. 802,133.

, To all whom it may concern:

Be it known that we, HENRY D. BoKoP and FREDERICK A. B01101, citizens of the United States, residing at Defiance, 1n the county of Defiance, State of Ohio, have 1nvented a new and useful Harrow, of which the following is a specification.

This invention relates to drags, harrows, cultivators and like agricultural implements, one of its objects being to provide an all metal structure of this character having teeth of novel form combined therewith, the teeth being so shaped as to be easily and cheaply constructed, readily fastened fixedly to the bars of the implement and capable of either cutting into the soil over which they are drawn or of smoothing the soil, this being dependent upon the direction in which the implement is drawn.

A further object is to provide teeth which are practically self-sharpening. I

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, can be made within the scope of what is claimed, without departing from the spirit of the invention.

In the accompanying drawings the preferred form of the invention has been shown.

In said drawings: Figure 1 is a plan view of a portion of a harrow, one complete section and a portion of another section being shown. Fig. 2 is an enlarged section on line AB Fig. 1. Fig. 3 is an enlarged side elevation of a portion of one of the longitudinal members of the harrow. Fig. 1 is a detail view of one of the teeth. Fig. 5 is a view showing how two teeth can be made from a single blank in one operation. Fig. 6 is a detail view showing a modified form of tooth.

Referring to the figures by characters of reference 1 designates angle strips arranged in pairs the strips of each pair being oppositely disposed with their bases extending laterally. Mounted on the upwardly extending portions of the strips 1 are cross strips 2 which are also angular in cross sectional contour, the same being held to the strips 1 by bolts 3 extending downwardly through the bases of the strips 1, as shown Patented Feb. 16, 1915.

particularly in Fig. 2. Extending between having apoint 5 formed by cutting diagonally, as shown at 6, through oblong, strips or bars 7. Apertures 8 are formed in pairs in the head 40f each tooth and bolts 9 which extend transversely through the longitudinal strips 1, are adapted to extend through either pair of apertures in each tooth.

The cross strips 2 extend beyond one side of the harrow section and are adapted to be hingedly connected to the corresponding strips of the next adjoining harrow section by means of a longitudinal rod 10 extending through the lapping ends of said cross strips, as shown in Fig. 1. Thus a flexible harrow is obtained, it being understood that any desired number of sections may be assembled to make a harrow of any desired proportions. he longitudinal, strips, which inthe preferre form of construction consist of angle strips in pairs, are so arranged that a broad surface is presented in a horizontal plane permitting the use of cross bracing 11, which may consist of one continuous piece extending the entire width of the harrow section and may be secured to the longitudinal strips 'by welding, brazing, riveting, bolting, or any other suitable means.

It is to be understood that all of the teeth of the harrow are to be similarly mounted. The harrow is adapted to be drawn by means of a draft chain 12 connected to one side portion of the front of the harrow so that the sections of the harrow will be drawn while disposed diagonally across the path of movement. Thus the harrow teeth, instead of pulling straight along the soil, will be disposed diagonally. Should the vertical edges of the teeth be in advance during the movement of the harrow, the points 5 of the teeth will cut into the soil so as thus to shapening. Should the teeth become unduly worn, they can be adjusted downwardly by removing bolts 9 and inserting them in the upper aperture 8. It will be seen that by arranging the teeth between parallel strips particular means of producing the teeth, it

being apparent that by thus forming them from oblongstrips or bars of metal, suchas shown in Fig. 5, two teeth can be simultaneously produced from each oblong strip,-

simply by producing a diagonal cut across thestrip and punching the apertures 8 into the end portions of the strip.

Instead of forming the teeth as herein'before described, they can be made as illustrated in Fig; 6. By referring to this figure it will be seen that each toothis made up of two'pieces 12 meeting at or adjacent their lower ends forming one or more obliquely disposed active edges. The'pieces 12 can be secured together attheir meeting portions or can' be left separate. Furthermore the plates or pieceslQ can be provided with apertures 13- for the reception of suitable fastening mean's'or they can b'e'secured to the toothb'eams of the 'harrow by welding or many other suitable manner. The same is likewise true of the teethshown in Figs. 3 and 4. By providing the series of apertures 13 in the plates 12, itis possibleto make as many adjustmentsfor wear as may be de-.

sired.

What is claimed is 1. In an agricultural implement, the combination with longitudinal angle strips ar ranged in pairs and having oppositely extending flanges, of continuous cross strips bearing'upon the longitudinal strips, means for fixedly connecting the cross strips to the longitudinalistrips, and diagonal braces extending under and secured to the longitudinal strips.

2. In an agricultural implement, the combination with parallel longitudinally extending anglestrips arranged in pairs and having oppositely extending flanges, of continuous cross strips bearing upon the longitudinal strips, means for fixedlyconnecting the'crossstri'ps to the longitudinal strips, braces extending under and secured to the longitudinal strips, teeth between the longitudinal strips of each pair,-and means for binding saidstrips upon opposed faces of the teeth.

In testimony that we claim the foregoing as our own, we have hereto affixed our signatures in tbe'presence of two witnesses.

HENRY D; BOKOP. FREDERICK A. BOKOP. Witnesses:

ART OsBoRN, J. E. WoLsmFER'.

Gopis of'flzhi patnt may Debb tained for five'cents each, byaddressing the Commissioner'of Patents,

Washington; D. G. 

